CNBCさんのインスタグラム写真 - (CNBCInstagram)「Immunity to Covid-19 may last only a few months, according to a U.K. study that casts doubts over the longevity of potential coronavirus vaccines.⁠ ⁠ Antibody responses to the coronavirus can peak three weeks after onset of symptoms, but then begin to decline after as little as two months, researchers found. ⁠ ⁠ The study examined the antibody levels of patients and health-care workers who had tested positive for the virus. Researchers found that levels of antibodies that can fight the coronavirus peaked three weeks after the onset of symptoms but then declined. While 60% of the people tested in the study had a “potent” level of antibodies after an average of 23 days following first onset of symptoms, only 16.7% had that level of antibodies 65 days after the first signs of symptoms.⁠ ⁠ The research calls into question how much protection individuals who have had the coronavirus have from subsequent reinfection, and the durability of any potential vaccine.⁠ ⁠ Link in bio.⁠」7月26日 20時01分